公开(公告)号：US11887521B2

公开(公告)日：2024-01-30

申请号：US17859397

申请日：2022-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Gunwoo Yang

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0252

Abstract: A pixel circuit may include a light-emitting element, a driving transistor which applies a driving current to the light-emitting element, a storage capacitor connected to a control electrode of the driving transistor, a data voltage-applying transistor which applies a data voltage to the storage capacitor, an emission transistor which connects the driving transistor to the light-emitting element in response to an emission signal, and a bias capacitor disposed between a first electrode of the driving transistor and a control electrode of the emission transistor.

公开(公告)号：US20230232660A1

公开(公告)日：2023-07-20

申请号：US17891986

申请日：2022-08-19

Applicant: Samsung Display Co., Ltd.

Inventor： Kyongjun Kim ,  Yongbin Kim ,  Sohyun Shin ,  Gunwoo Yang ,  Dongjin Lee ,  Heejin Jeon ,  Hyunyoung Choi

IPC: H01L27/32 ,  G09G3/3233

CPC classification number: H01L27/326 ,  H01L27/3234 ,  H01L27/3272 ,  G09G3/3233 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2300/0819 ,  G09G2300/0426 ,  G09G2320/0242 ,  G09G2320/0233

Abstract: A display apparatus includes a first pixel circuit and a second pixel circuit. The first pixel circuit includes a first driving transistor and a first storage capacitor having a first lower storage electrode connected to a gate of the first driving transistor and a first upper storage electrode overlapping the first lower storage electrode. The second pixel circuit includes a second driving transistor and a second storage capacitor including a second lower storage electrode connected to a gate of the second driving transistor and a second upper storage electrode overlapping the second lower storage electrode. A second overlapping area of the second lower storage electrode and the second upper storage electrode is about twice to about four times a first overlapping area of the first lower storage electrode and the first upper storage electrode.

公开(公告)号：US11282421B2

公开(公告)日：2022-03-22

申请号：US16818348

申请日：2020-03-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Gunwoo Yang ,  Yongbin Kim ,  Hyun Young Choi

IPC: G09G3/00 ,  G09G3/3241 ,  G09G3/3266

Abstract: A method of detecting a pixel defect for detecting a defect of a pixel including first to fourth transistors, connected to a data line, and receiving a scan signal and an initialization control signal includes turning on the first through fourth transistors by changing the scan signal and the initialization control signal to have a turn-on voltage level in an inspection period, detecting an inspecting current flowing in a path corresponding to the first through fourth transistors using a current detector that is connected to the data line, determining that a threshold voltage of the second transistor is within a normal range when the inspecting current is within a reference range, and determining that the threshold voltage of the second transistor is out of the normal range when the inspecting current is out of the reference range.

公开(公告)号：US10656491B2

公开(公告)日：2020-05-19

申请号：US15642102

申请日：2017-07-05

Applicant: Samsung Display Co., Ltd.

Inventor： Gichang Lee ,  Yongjo Kim ,  Cholho Kim ,  Gunwoo Yang ,  Jihoon Yang ,  Yongwoo Lee

IPC: G02F1/1368 ,  G02F1/1362 ,  H01L29/417 ,  H01L27/12 ,  H01L29/786 ,  G02F1/136

Abstract: A liquid-crystal display including: a gate line extending in a first direction; a gate electrode protruding from the gate line; a gate insulating layer arranged on the gate electrode; an active layer arranged on the gate insulating layer while being insulated from the gate electrode; a data line arranged on the active layer and extending in a second direction; a source electrode protruding from the data line, having a portion overlapping the gate electrode on a plane, and including a plurality of source electrode branches that are separate from each other; a drain electrode being separate from the source electrode, and including a plurality of drain electrode branches, each being arranged between two of the plurality of source electrode branches, and a drain electrode connecting part connecting the plurality of drain electrode branches; a pixel electrode defining a pixel region; a liquid-crystal layer arranged on the pixel electrode.